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Chevrolet B1325

Cannot relearn TPM • Specific to Hybrids: – Reduced propulsion power message. – Service high voltage charging system message. Cause If nothing else can be identified as the root ca

DriveNot yet established by verified evidence. Because B1325 is associated with potentially erratic electric power-steering boost, arrange professional diagnosis rather than assuming normal operation is safe.
ChargeNot yet established by verified evidence. The supplied evidence lists a Service High Voltage Charging System message for hybrids but does not establish that B1325 alone determines whether charging is safe or permitted.
ServiceProfessional service is appropriate because the verified evidence associates B1325 with possible erratic electric power-steering assist and potentially broad electrical symptoms. Immediate urgency is not established by the supplied evidence.
Confidence95%

Quick answer

B1325 is listed in Chevrolet bulletin 13-08-116-001 revisions as a code that may appear with erratic electric-power-steering assist and several other electrical symptoms. The supplied evidence does not establish a single B1325 definition, root cause, driving decision, charging decision, or repair for an individual vehicle.

This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.

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1. What does B1325 mean?

B1325 is listed in Chevrolet bulletin 13-08-116-001 revisions as a code that may appear with erratic electric-power-steering assist and several other electrical symptoms. The supplied evidence does not establish a single B1325 definition, root cause, driving decision, charging decision, or repair for an individual vehicle.

2. Technical explanation

The supplied official Chevrolet/NHTSA bulletin evidence groups B1325 with possible erratic electric power-steering boost, alongside U2109, U2107, U2100, and C0000. The same bulletin describes a broad set of possible electrical symptoms, including flickering displays, communication codes, battery rundown, TPM relearn difficulty, and—on hybrids—reduced-propulsion-power and service high-voltage-charging-system messages. It directs normal SI diagnostics first; the excerpt provided does not establish the specific diagnostic result or repair.

3. What system is affected?

Electric power steering is specifically associated with B1325 in the verified bulletin. Other systems may be involved in the bulletin’s broader symptom list, but their relationship to B1325 on a particular vehicle is not established by the supplied evidence.

4. How serious is this code?

Unknown. The diagnostic record marks severity as unknown.

5. Symptoms you may notice

  • Erratic electric power-steering boost may be associated with B1325.
  • The bulletin also lists erratic gauge readings or flickering displays, SES/MIL/CEL illumination with communication codes, battery rundown, and Service Tire Pressure Monitoring system illumination with inability to relearn TPM.
  • For hybrids, the bulletin lists reduced propulsion power and a Service High Voltage Charging System message.

6. Possible causes

  • Not yet established by verified evidence. The supplied bulletin says to perform normal SI diagnostics and, if no other root cause is identified, check for a condition described further in the bulletin; that condition is not included in the supplied evidence.

7. Can I still drive the vehicle?

Not yet established by verified evidence. Because B1325 is associated with potentially erratic electric power-steering boost, arrange professional diagnosis rather than assuming normal operation is safe.

8. Can I charge the vehicle?

Not yet established by verified evidence. The supplied evidence lists a Service High Voltage Charging System message for hybrids but does not establish that B1325 alone determines whether charging is safe or permitted.

9. What you can safely do

  • Record all warning messages and symptoms present when the code was read.
  • Have normal manufacturer SI diagnostics performed by qualified service personnel.
  • Do not attempt high-voltage system diagnosis or repair based on this code.

10. Step-by-step troubleshooting

  1. Retrieve and document all diagnostic trouble codes, including accompanying communication codes.
  2. Follow normal Chevrolet SI diagnostics, as directed by bulletin 13-08-116-001 revisions.
  3. If normal diagnostics do not identify a root cause, have a qualified technician consult the complete applicable bulletin.

11. When to contact service

Professional service is appropriate because the verified evidence associates B1325 with possible erratic electric power-steering assist and potentially broad electrical symptoms. Immediate urgency is not established by the supplied evidence.

12. What the service center may check

  • Perform normal SI diagnostics.
  • Check for all related communication and chassis/body codes present with B1325.
  • Consult the complete applicable version of Chevrolet bulletin 13-08-116-001 if normal diagnostics do not identify the root cause.

13. Possible repair or resolution

  • Not yet established by verified evidence. The supplied excerpt does not provide a confirmed repair procedure or resolution.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Chevrolet bulletin 13-08-116-001I, published through NHTSA as MC-10239102-0001 on 2023-06-29.
  • Earlier supplied revisions: 13-08-116-001H (MC-10222776-0001), 1308116001G (MC-10213767-9999), 1308116001F (MC-10183782-9999), 1308116001E (MC-10163272-9999), and 13-08-116-001C (MC-10140298-9999).

16. Recall information

  • Not yet established by verified evidence. No recall evidence was supplied.

17. Official manufacturer information

Official NHTSA-hosted Chevrolet bulletin: https://static.nhtsa.gov/odi/tsbs/2023/MC-10239102-0001.pdf

19. Frequently asked questions

What does B1325 mean?

The supplied diagnostic title says “Cannot relearn TPM,” but the verified bulletin evidence associates B1325 with possible erratic electric power-steering boost. A single definitive meaning is not established by the supplied evidence.

Can B1325 cause reduced propulsion power?

The bulletin lists reduced propulsion power specifically for hybrids within its broader symptom list. It does not establish that B1325 alone causes that message.

Is there a confirmed fix for B1325?

Not yet established by verified evidence. The supplied bulletin excerpt directs normal SI diagnostics first.

20. Sources & verification

Verified
Chevrolet B1325: Cannot relearn TPM • Specific to Hybrids: – Reduced… | EV Diagnostics